<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter=20>
                <el-col :span="8">
                    <el-input placeholder="请输入搜索的内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table  :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态" >
                    <template slot-scope="scope">
                    <el-switch
                    v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                    </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini"
                        @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
            </el-pagination>
        </el-card>
        <!-- 添加用户的对话框 -->
        <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%" @close="addDialogClosed">
        <!-- 内容主题区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
        </el-dialog>
        <!-- 修改用户的对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
        </el-dialog>
        <!-- 分配角色的对话框 -->
        <el-dialog
        title="提示"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed">
        <div>
            <p>当前的用户：{{userInfo.username}}</p>
            <p>当前的角色：{{userInfo.role_name}}</p>
            <p>分配新角色：
                <!-- 下拉框 -->
                <el-select v-model="selectedRoleId" placeholder="请选择">
                    <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                    </el-option>
                </el-select>
            </p>
        </div>

        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
        </el-dialog>

    </div>
</template>
<script>
export default {
    data() {
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
        // 验证邮箱的正则表达式
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

        if (regEmail.test(value)) {
            // 合法的邮箱
            return cb()
        }

        cb(new Error('请输入合法的邮箱'))
        }

        // 验证手机号的规则
        var checkMobile = (rule, value, cb) => {
        // 验证手机号的正则表达式
        const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

        if (regMobile.test(value)) {
            return cb()
        }

        cb(new Error('请输入合法的手机号'))
        }

        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                // 当前的页数
                pagenum: 1,
                // 当前每页显示多少条数据
                pagesize: 2
            },
            userList: [],
            total: 0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            // 添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            // 添加表单的验证规则对象
            addFormRules: {
                username: [
                { required: true, message: '请输入用户名', trigger: 'blur' },
                {
                    min: 3,
                    max: 10,
                    message: '用户名的长度在3~10个字符之间',
                    trigger: 'blur'
                }
                ],
                password: [
                { required: true, message: '请输入密码', trigger: 'blur' },
                {
                    min: 6,
                    max: 15,
                    message: '用户名的长度在6~15个字符之间',
                    trigger: 'blur'
                }
                ],
                email: [
                { required: true, message: '请输入邮箱', trigger: 'blur' },
                { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                { required: true, message: '请输入手机号', trigger: 'blur' },
                { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制修改用户对话框的显示和隐藏
            editDialogVisible: false,
            // 修改用户的表单数据
            editForm: {},
            // 修改表单的验证规则对象
            editFormRules: {
                email: [
                { required: true, message: '请输入用户邮箱', trigger: 'blur' },
                { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                { required: true, message: '请输入用户手机', trigger: 'blur' },
                { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            rolesList: {},
            // 已选中的角色
            selectedRoleId: {}
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
        const { data: res } = await this.$http.get('users', {
            params: this.queryInfo
        })
        if (res.meta.status !== 200) {
            return this.$message.error('获取用户列表失败！')
        }
        this.userlist = res.data.users
        this.total = res.data.total
        console.log(res)
        },
        // 监听pagesize改变的事件
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听页码值改变的事件
        handleCurrentChange(newPage) {
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听 switch 开关状态的改变
        async userStateChanged(userinfo) {
        console.log(userinfo)
        const { data: res } = await this.$http.put(
            `users/${userinfo.id}/state/${userinfo.mg_state}`
        )
        if (res.meta.status !== 200) {
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error('更新用户状态失败！')
        }
        this.$message.success('更新用户状态成功！')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed() {
        this.$refs.addFormRef.resetFields()
        },
        // 点击按钮，添加新用户
        addUser() {
        this.$refs.addFormRef.validate(async valid => {
            if (!valid) return
            // 可以发起添加用户的网络请求
            const { data: res } = await this.$http.post('users', this.addForm)

            if (res.meta.status !== 201) {
            this.$message.error('添加用户失败！')
            }

            this.$message.success('添加用户成功！')
            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            // 重新获取用户列表数据
            this.getUserList()
        })
        },
        // 展示编辑用户的对话框
        async showEditDialog(id) {
        // console.log(id)
        const { data: res } = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
            return this.$message.error('查询用户信息失败！')
        }

        this.editForm = res.data
        this.editDialogVisible = true
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
        this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
        this.$refs.editFormRef.validate(async valid => {
            if (!valid) return
            // 发起修改用户信息的数据请求
            const { data: res } = await this.$http.put(
            'users/' + this.editForm.id,
            {
                email: this.editForm.email,
                mobile: this.editForm.mobile
            }
            )

            if (res.meta.status !== 200) {
            return this.$message.error('更新用户信息失败！')
            }

            // 关闭对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('更新用户信息成功！')
        })
        },
        // 根据Id删除对应的用户信息
        async removeUserById(id) {
        // 弹框询问用户是否删除数据
        const confirmResult = await this.$confirm(
            '此操作将永久删除该用户, 是否继续?',
            '提示',
            {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }
        ).catch(err => err)
        // err => {
        //   return err
        // }
        // 如果用户确认删除，则返回值为字符串 confirm
        // 如果用户取消了删除，则返回值为字符串 cancel
        // console.log(confirmResult)
        if (confirmResult !== 'confirm') {
            return this.$message.info('已取消删除')
        }

        const { data: res } = await this.$http.delete('users/' + id)

        if (res.meta.status !== 200) {
            return this.$message.error('删除用户失败！')
        }

        this.$message.success('删除用户成功！')
        this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo) {
        this.userInfo = userInfo

        // 在展示对话框之前，获取所有角色的列表
        const { data: res } = await this.$http.get('roles')
        if (res.meta.status !== 200) {
            return this.$message.error('获取角色列表失败！')
        }

        this.rolesList = res.data

        this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo() {
        if (!this.selectedRoleId) {
            return this.$message.error('请选择要分配的角色！')
        }

        const { data: res } = await this.$http.put(
            `users/${this.userInfo.id}/role`,
            {
            rid: this.selectedRoleId
            }
        )

        if (res.meta.status !== 200) {
            return this.$message.error('更新角色失败！')
        }

        this.$message.success('更新角色成功！')
        this.getUserList()
        this.setRoleDialogVisible = false
        },
        // 监听分配角色对话框的关闭事件
        setRoleDialogClosed() {
        this.selectedRoleId = ''
        this.userInfo = {}
        }
    }
}
</script>
<style lang="less" scoped>

</style>